Fare-register



(No Model.) I

F. E. DAVIS.

v FARE REGISTER. No. 248,717. Patented Oct. 25,1881.

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UNTTED STATES PATENT QEEICE.

FRANK E. DAVIS, OF 'SOMERVILLE, MASSACHUSETTS.

FARE-REGISTER.

SPECIFICATION forming part Of Letters Patent No. 248,717, dated October25, 1881.

Application filed September 27, 1880.

To all whom it may concern:

Be it known that I, FRANK E. DAVIS, of Somerville, in the county ofMiddlesex and State of Massachusetts, have invented a new and usefulNumerical Register, of which the following is a specification.

My invention relates to that class of registers that are used to givethe sum of units of actions, the action being caused by the movement ofa knob or leverwhich is actuated either directly or indirectly by theuser; and it consists in combining, with a series of indi eating-disks,a series of ratchet-wheels and a single pawl, the end of the pawl beingpro vided wit-h projections of unequal length, one projection working onone wheel only, each wheel having one notch so deep .thatit willallowthat projection of the pawlwhich operates it to penetratcsofar asto cause the projection that is intended to operate on the next disk towork. Thus the two disks will move together. This same constructionbeing applied to all of the ratchets in the series, it will beunderstood that a certain number of movements of the pawlwill cause allof the disks to move and to register to the full extent of the device.

In the drawings, Figure l is an iuteriorview in side elevation. Fig. 2is a front elevation,

a part being represented as broken out for the purpose of showing theinterior construction.

Fig. 3 is a perspective view of the pawl. Figs.

4, 5, and 6 are drawings to represent the ratchet-wheels which operateindicating-disks. Let A represent the outside casing of my enumerator,and B theactuating-knob.

. B is a sliding bar, which is forced outwardly by the action ot'the'spring B onc end of the spring B resting against a fixed buttress,0, attached 'to' the case A, while the OtllQIJBlld acts against apin,b,in the sliding bar B. In

use the operator pushes the bar B in, and the ratchet-wheel havingattached to it an indicat- (No model.)

ection d acting upon the unit-ratchet H and being longer than the othertwo projections, it prevents them from engagingwith the teeth of theratchets H H, except when thedeep notch M on the ratchet H comes intoplace. Then the projection 61 falls into the deep notch and allows theprojection dto act on the tensratchet .H. turned one notch or one-tenthof its circnmfer- Thus the tens-ratchet will be,

once as often as the unit-ratchet H has made a whole revolution. Vhcnthe tens-wheel has made a full revolution, then the notches M and M willcoincide, so as to allow both of the projections dd to enter the deepnotches, thus causing the short projection d to engage with the hundredswheel H and causeitto move one notch.

By this device I am enabled to record units, tens, and hundreds withoutthe intervention of any train of wheels or levers. The capacity of theenumerator might be increased indefinitely by adding to the number ofthe indicating-disks.

For convenience in reading the figures I have an opening at A Figs. 1and 2. This may be protected by glass or mica, if desirable.

To set the indicating-disks K K K I have a part, A, of the case A hungon a hinge, a, so that it can be turned back and allow the user toadjust the disk to the zero-points.

I claim- The combination, in a registering device, of the knob B, itssliding bar B, spring B pawl D, having projections d (1 d with theratchet-wheels H H H and disks K K K, all operating togethersubstantially as described, and for the purpose set forth.

FRANK E. DAVIS.

Witnesses:

HELEN M. FEEGAN, J. W. DAVIS.

